I think in some ways Australia (and NZ)'s approach made less sense pre- vaccine. There was talk about there never being a vaccine; talk of a vaccine being barely 50% effective; talk of a vaccine taking 5-10 years to achieve and not being a panacea.
In that scenario I'm really not sure what they could do.
Instead now, whilst it looked a bit like they hid under the duvet and waited for a vaccine, they did in fairness have a vaccine of their own being created up in Brisbane, I think, but it got the shovel after some false HIV positives or something (yikes - glad I wasn't on that trial!) (I was on the Novavax one here in the UK)
With the hindsight of a vaccine it looks great, if they can just get it out in a nice timely manner, and swerve some of the supply issues. They did put their eggs in very few baskets, but not many countries threw so much dosh and was so keen to gamble as Boris alongside the wonderful Kate Bingham (she better have an OBE soon). If it had fallen on it's arse we'd be dissing it in the same way as we do Dido Harding's world beating 12 billion pound test track and trace, only it bore fruit in a wonderful way thankfully. But he did gamble with a fair bit of taxpayers money. Not complaining.
So to the poster who said it will be interesting to see how they open up - yes it will, and yes, of course they will.
I'd also like a parallel universe crystal ball to see what would have happened with no vaccine (my mum calls them "covid virgins") but there's no point speculating. I wonder if it just would have taken hold one winter after snap 3 day lockdown 3,253,000 and they just said "oh fuck it".
I just want to state that all jokes aside, I really do think what they did for Australia was the right thing for them, and that, for the time being, includes the snap 3 day lockdowns they have from time to time, because you don't get this far in things and fuck it all up now, do you.